Set user avatar from front end in wordpress

Question

I am working on user registration page. When user upload the image then I attached that image in user meta by attachment id, now when user add the comment then his uploaded photo is not appearing in comment list beside his comment. After some search I got some information in avatar...but cant get any idea about how to upload avatar from front side?

Answer 1

<?php
if ( function_exists( 'get_avatar' ) ) {
  echo get_avatar( $user->user_email, 50);
 } else {
  //alternate gravatar code for < 2.5
  $grav_url = "http://www.gravatar.com/avatar.php?gravatar_id=
     " . md5($user->user_email) . "&default=" . urlencode($default) . "&size=" .   $size;
  echo "<img src='$grav_url' height='50px' width='50px' />";
}
?>

Please check with this code. This should work.